科研之友
微信
新浪微博
Facebook
分享链接
摘要
This paper proposes a novel anchor toward large-sized fiber-reinforced polymer (FRP) cable with multi tendons and optimizes the key factors that affect anchor efficiency using finite element method (FEM). The limitations of conventional anchors for FRP tendons/cables were first analyzed. A new type of conical anchor with novel continuous-fiber-reinforced load transfer component (LTC) was proposed to overcome shortcomings of conventional anchors. The four key factors affecting anchor efficiency including modulus variation, conical degree, anchor length and the thickness of LTC were analyzed respectively. The results show that the proposed anchor not only owns an essential advantage in bonding by integrating LTC and FRP cable but also realizes the variable modulus of LTC by changing the winding angle of fiber roving. The optimization of key factors reveals that the avoidance of shear and compressive stress concentration can be realized by LTC modulus variation, while the conical degree of LTC significantly affects compressive stress distribution and cable axial displacements. The anchor length controls both compressive stress distribution and peak shear stresses, whereas the LTC thickness at the loading end only affects the peak compressive stresses and axial displacement. The optimization of above four factors determines the design of the proposal anchor.
- 出版日期2015-2
- 单位东南大学
